In the global freezing apocalypse caused by a sudden decrease in solar activity, the protagonist Zhang Mo (replaceable) is reborn and returns to three months before the disaster. Not only does he have memories of the future, he has also awakened a unique ability - the design diagram system of all things. Anything he deeply understands the principles or structure of (from a crossbow to a biodome) can generate detailed "blueprints" within the system. With the blueprint, he can build or reproduce it very efficiently and at low cost. This is the biggest difference between him and ordinary reborners and hoarders.
· Core conflict: In the extremely cold hell where resources have been reduced to zero, the game of survival, the struggle of humanity and the reconstruction of civilization revolve around the ability of the "design map".
